Turn-to-zero mechanism for cash-registers.



MEJA CQB;

TURN T0 ZERO MECHANISM FOR CASH REGISTERS. APPLICATION F'ILED'JUNE I8, 1913.

1,188,010. Patnted May16, 1916.

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M-. JACOB. TURN T0 ZERO MECHANISM FOR CASH REGISTERS. APPLICATION FILED JUNE I8, 1913. 1,183,010. Patented May16, 1916.

3 SHEETS-SHEET 2- avwem'toz 5 qmrtu m k M. JACOB. TURN T0 ZERO MECHANISM FOR CASH REGISTERS.

APPLICATION FILED JUNE 18, I913- Patented May 16, 1916; N53.

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MAX JACOB, 0F BERLIN, GERMANY, ASSIGNOR TO THE NATIONAL GASH REGISTER COMPANY, OF DAYTON, OHIG, A GQRPGRATION OF OHIO, (INCORPORATED IN 1936.)

TURN-TOZERO MECHANISM FOR CASH-REGIS TEES.

Application filed June 18, 1913.

The principal object of this invention is to provide means by which the totalizer may be turned to Zero and an item entered thereon during a single regular operation of the machine. To this end a special key is provided which, when operated, couples the turn to zero mechanism to the operating mechanism. Suitable. pawls intermediate the totalizer wheels and the shaft supporting the wheels are engaged by a groove in the shaft when rotated to pick up the pa-wls in whatever position they may stand to turn the wheels to zero during the first part of the operation of the machine. This turn to zero mechanism is constructed to be operated before the differential mechanismof the machine is actuated so that the amount set up on the keyboard may be added on the totalizer during the latter part of the operation of the machine.

With these and incidental objects in view, the invention consists in certain novel features of construction and combinations of parts, the essential elements of which are set forth in appended claims, and a preferred form of embodiment of which is hereinafter described with reference to the drawings which accompany and form part of the specification.-

Figure 1 is an end elevation of the register showing the invention applied thereto. Fig. 2 is a transverse vertical section taken along a bank of amount keys and showing the differential mechanism of a register of a type to which the present improvements are shown as applied. Fig. 3 is a top plan view of the turn to zero mechanism shown in Fig. 1. Figs. 4 and 5 are details respectivelvizof the devices employed to aline the totalizer shaft in zero position and to aline the totalizer pinions in their various positions.

For convenience of llustratlon the 1nven- Specification of Letters Patent.

- issued April 13, 1897 to J. P. Cleal and F.

Patented May 16, 1916.

Serial No. 774,300.

tion has been shown as applied to a machine of the type shown and described in Letters Patent of the United States, No. 580,3?8, A. Reinhard.

The operation of the machine to which the present improvements are shown as applied, 18 substantially the same as that of the machine shown in the above mentioned Letters Patent, but for the sake of convenience it will be briefly described as follows: The ma chine comprises a plurality of banks of keys, any one of which keys, when depressed, serves as a stop for a differentially movable rocking segment 2' (Fig. 2). Only one of such banks of keys 1 is shown in the drawings,.but it will be understood that the sen eral banks which generally comprise a single machine for practical use are the same in principle and duplicates in construction. Segment :2 receives its rocking movement from a segment 3 to which it is automati cally coupled and uncoupled in a manner well known in'the art and fully set forth in the above mentioned Letters Patent Seg ments 3 are rigidly mountedon the oscillatory shaft 4 which is driven from a main shaft 5 through the medium of an arm (not shown) faston the shaft 5, pltman 10, and arm 11 rigid on the shaft 4. The main drive shaft 5 is given one complete rotation at every operation of the machine by the crank handle 6 through the gears'i, 8, and 9.

Each segment'Q- is formed with teeth 12 meshing with similar teeth 13 formed on an intermediate gear 1 1 througlr the medium of which gear the differential movement of the segment 2 is transmitted to the indicating and totalizing mechanisms upon the upward movement of the segment 3. I The gears 11 mesh with pinions 15 loosely mounted on v a shaft 16. Rigidly mounted on the side of each pinion 15 is a smaller pinion '17 (Fig. :2). Immediately beside eachpinion 1? is a companion pinion (not shown) rigid iii;

a corresponding totalizing wheel 18 and in order to transmit the differential movement of the pinion 17 to its companion pinion and therefore to the totalizer wheel. there is a broad pinion 19 normally out of mesh with the companion pinions. The broad pinions 19 are carried by arms 21 fast on a rock shaft 22 extending across the machine. The shaft is provided with a depending an: which, at its lower end, is pivoted to a r projecting into a groove 27 formed in a box cam 28 rigidly mounted on the main shaft 5.

The groove 27 of the box cam 28 is so constructed as to give the pitman 24 one reciprocation at each operation of the machine thus causing the rocking of the shaft 22 and the engagement of the broad pinions 19 with their appropriate pinions 17 This engagement of the pinions 19 with their corresponding pinions 17 is effective only during the time that the segments 2 are receiving their differential adjustment, the totalizing wheels thereby receiving movement to extents commensurate with the value of the keys 1 which were depressed. The inter- .-mediate gear 14 constantly meshes with the pinion 31 rigid with the indicating disk 32 so that when the intermediate gear 14 re- 'qceives it's differential movement from the segments 2 the indicators will display the proper amount. Referring to Figs. 1 and 3, fast on a ---.-sh'aft 33 to which the gear 8 is fastened is a drum 34 having two disks 36 and 37 integral therewith. These disks are of the same izer is not to be turned to zero by means of a spring 43 coiled about the shaft 33 and the intermediate the gear 8 and the disk 37. The key 42 is slidably mounted in nrackets 44 and 45 and is normally held in undepressed position by a spring 46 which presses against a pin 47 projecting from the key into a slot 48 in the top of the bracket 45, the other end of the spring being backed by the side of the bracket 45. The drum 34 and the disks 36 and 37 rigid therewith are splined on the shaft 33 so that they have a limited sliding movement lengthwise of the shaft but are given a complete rotation when said shaft is rotated bythe driving mechanism. Vhen the turn to zero key 42 is depressed the drum .34 and the disks 36 and 37 are shifted toward the gear 8 and the key is held in its depressed condition with the projection 52 behind the flange 39 on the drum 34 during the initial part of the operation of the machine by theengagementof the projection or shoulder 52 against the inner periphery of the circular flange.

By sliding the drum 34 and the disks 36 and 37 toward the gear 8 a block 53 fast on the face of the disk 37 is brought into engagement with one of three pins 54 projecting from the side of the gear 50, and d sk 36 5 brought into operative alinement with a mutilated gear 58 rigid with a drum 55 carried by a stub shaft 51 projecting from the side frame of the machine. The gear and its drum at the very beginning of the operation of the machine by the engagement of the block with one of the pins on the gear gives the gear and the drum a slight counter clockwise movement. This movement of the drum brings the three teeth 38 on the disk 36 into mesh with one of the sets of four teeth 57 on the mutilated gear 58 on the drum There are three sets of teeth 57 on the mutilated gear 58, there being space for one tooth betweeneach set of teeth.

From the above description it can readily be seen that the drum 55 and therefore the gear 50 will be given one-third of a rotation upon a complete operati n of the machine and that such movement will be imparted during the first 120 degrees of movement of the gear 8. The gear wheel 50- is provided with- The totalizer wheels 18, as stated, are

loosely mounted upon the totalizer shaft 16 and these wheels are provided" with spring pressed turn to zero pawls 61 (Fig. 5) bearing on the periphery of the shaft. The shaft is provided with a longitudinal groove 62" which is so constructed that when the wheels are turned in a clockwise direction while an item is being entered thereon, the pawls ride idly over the groove. \Vhen, however, the shaft is rotated in a clockwise direction the pawls drop into the grooves 62, when the groove is opposite the pawls, and as the pawls are engaged by'the radial edge of the groove, rotation of thesshaft will therefore carry all the wheels to zero position.

The spring pressed arms 63 are employed to aline the totalizer wheels in their differentially set position by engaging the notches in star disks 64 rigidly mounted on one side of the totalizer wheels. The pawls 63 are loosely mounted on a shaft 65 but are adapted to be rocked rearward upon oscillation of the shaft as a hub 66 surrounding the shaft andintegral with the pawl is provided with diametrically opposite notches 67, one face of each notch being adapted to be engaged by studs 68 projecting from the'shaft 65 into the notches. The totalizer shaft 16 carries rigid. therewith a disk 69 with a cut out portion 70 positioned thereon to be engaged by a roller 71 carried by an arm 72 msm therefor;

entered thereon spring 43 forces the disks 36 and 37 spring 73, which tends to rock the arm 72 and therefore the shaft 65 in a counter-clockwise direction. As soon as the shaft 62 begins to rotate the arm 72 and therefore the shaft 65 are rocked rearward and through the engagement of the studs 68 on the shaft 65 with the hubs 66 integral with the alining pawls 63, the pawls are carried out of engagenient with the locking disks 64 during about the first 120 degrees of rotation of the drive shaft in a turn to zero operation. At the'end of the rotation of the disk 69 the spring. 73 restores the shaft 65 and the arm 72 to normal position and the engagement of the roller 71 in the cut out portion 70 alines the totalizing shaft 16 in its zero position.

The gearing of the machine is so constructed that the rotations of the totalizer wheels to zero position is completed during the first part of the operation of the machine. that is while the segments 3 are being rocked downward. After the totalizer wheels are set to zero and before the upward movement of the segments 21 with the segments 3 the broad pinions 19 are rocked into mesh with the companion pinions 17 so that the differential movement of the segments 2 upon the return movement of the segments 3will actuate the totalizer wheels 18 to extents con'imensurate with the value of the amount keys depressed. After the totalizer wheels are set to zero position and before the segments 2 are coupled to the segments 3 for return movement. the circular flange 39 on the face of the drum 34 passes out of engagement with the shoulder 52 on the key and the spring 46 restores the key to normal position. At the same time tbs an the drum 3% to normal position so that continued rotation of these members will not drive the drum 55. The drum 55 is locked from rotation during the last two-thirds of rotation of the drum 23+ by the periphery of the disk 37 working in the tooth spaces between the sets of teeth 57 on the gear 58.

lVhile the form of mechanism herein shown and described is admirably adapted to fulfil the objects primarily stated. it is to be understood that it is not intended to confine the invention to the one form of em bodiment herein shown and described, as it is susceptible of embodiment in various forms all coming within the scope of the claims which follow.

\Vhat is claimed is: 1. In an accounting machine, the combination with a totalizer; of operating mechaturn to zero devices for the totalizer 'normally independ at the oper-- ating mechanism; and mear f r reparmg the turn to zero devices for v:ra n so that the totalizer may be set to zero id an item during the same operation of the machine that the turnv to zero devices are prepared for operation.

2. In an accounting machine, the combination with a totalizer; of differential mechanism therefor; manipulative means for controlling the extent of movement of the differential mechanism; a main operating mech-' anism; a device for setting the totalizer to zero; and a manipulative means independent of saidfirst manipulative means for coupling said operating mechanism with said turn to zero device so that after the second manipulative means is operated and during the same operation of the machine, the totalizer is turned to zero and an item entered thereon.

3. In an accounting machine. the combi nation with a totalizer; of means for entering items thereon; connections for resetting the totalizer to Zero upon certain operations of the means and before the latter enters an item on the totalizer at the same operation of the machine; and a device for preparing said connections for operation by said means at the same operation of the machine that the totalizer is reset to zero.

4. In an accounting machine, the combination with a totalizer; of meansfor enter ing items thereon; connections for resetting the totalizer to Zero upon certain operations of said means and before an itemis entered on the totalizer at the same operations; and manipulative means for controlling said connections and operable for such purpose at the same operation of the machine that the totalizer is reset to zero.

In an accounting machine the combination with a totalizer; of means for entering items thereon; connections for resetting the former to Zero upon certain opera tions of the latter; and means for locking said resetting connections against movement after the totalizer has been reset to Zero and before an item is entered on the totalizer.

6. In an accounting machine, the combination with a main operating mechanism; of differential mechanism driven thereby; a plurality of totalizer elements actuated by said differential mechanism; a single rotatable shaft upon which said totalizer elements are mounted; connections intermediate the shaft and totalizer elements for resetting the latter upon a rotation of the former: and means intermediate the shaft and the main operating mechanism for rotating the shaft before the differential mechanism is actuated by the main operating mechanism to enter an item on the totalizer during the same operation ofthe main operating mechanism.

7. In an accounting machine, the combination with a main operating mechanism; of a totalizer; differential mechanism for actuating the totalizer and driven by the shaft on which said totalizer is mounted:'

connections intermediate the shaft andithe totalizer elements for resetting the latter to Zero upon a rotation of the former; adjustable means intermediate the shaft and the main operating mechanism capable of rotating the shaft upon an operation of the main operating mechanism and before the actuation of the totalizer by the differential mechanism; and a manipulative means for rendering said adjustable means operative.

R. In an accounting machine, the combination with a totalizer: of means for'entering items thereon; connections rendered operative for setting the totalizer to zero upon the initial movement of the means and at thesame operation of the machine; and additional means for rendering said connections ineffective after the totalizer has been restored to zero so that continued operation a of said first means enters an item on the totalizer.

nation with a totalizer comprising a plurality of movable elements; of a main operating mechanism for driving the same; a resetting shaft on which said elements are loosely mounted; "a pinion fast on said shaft; a gear meshing with saidpinion: a mutilated pinion rigid with said gear; and a disk given a complete rotation by the operating mechanism and provided with projections for engaging the teeth on said mutilated pinion to turn the resetting shaft upon the initial movement of the main operating mechanism and before an item is entered on the totalizer by the final movement of the operating mechanism.

10. In an accounting machine. the combination with a totalizer comprising a pluralitv of movable elements and a main operating mechanism for driving the same; of a resetting shaft on which said elements are loosely mounted; a pinion fast on said .shaft: a gear meshing with said pinion:

a mutilated pinion rigid with said gear and a slidable disk given a complete rotation by the operating mechanism and provided with projections for engaging the teeth on said mutilated pinion and normally out of co operative relationship therewith: and a manipulative means for moving said disk into cooperative relationship with the mutilated pinions to turn the resetting shaft upon the initial movement of the main operating mechanism and before an item is entered on the totalizer by the final movement of the operating mechanism.

11. In an accounting machine. the combination with a totalizer, comprising a plu rality of totalizer elements: of a main operating mechanism for driving the same; a resetting shaft on which totalizer elements are loosely mounted; apinion fast on said shaft; a gear meshing with said pinion; a mutilated pinion rigid with said gear; a slidable disk given a complete rotation by the operating mechanism and provided with projections for engaging teeth of the said mutilated pinion but normally out of cooperative relationship therewith; manipulative means for moving said disk into cooperative relationship with the mutilated pinions toturn the resetting shaft on the initial movement of the operating mechanism; and means for automatically moving said disk to normal position before an item is entered on the totalizer by the final movement of the operating mechanism.

12. In an accountingmachine the combination with a totalizer, comprising a plurality of totalizer elements a main operating mechanism for driving the same; a resetting shaft on which said totalizcr elements are loosely mounted: a pinion fast on said shaft: :1 gear meshing with said pinion:.a mutilated pinion rigid with said gear; a slidable disk given a complete rotation by the operating mechanism and provided with projections for engaging teeth of the said mutilated pinion but normally out of cooperative relationship therewith; mani iulative means for moving said disk into cooperative relationship with the mutilated pinions to turn the resetting shaft on the initial movement of the operating mechanism: means for automatically moving said disk to normal position before an item is'entered on the totaliZer by the final movement of the operating mechanism; and a disk cooperating with said mutilated gear for preventing further rotation of the gear after the resetting shaft has been given one complete rotation.

13. In an accounting machine, the combination with an accounting device; of means for entering items thereon; connections for resetting the accounting device to zero upon certain operations of the means and before the latter enters items on the totalizer at the same operations; and aliaing devices for the accounting device constructed to be withdrawn from alining position while the accounting device is being reset to zero.

14. In an accounting machine. the comb"- nation with a totalizer; of means for enttring items thereon: connections for i'o'etting the former to zero upon certain opnrations of the latter and before an item i-- ertered on the totalizer at the same o erations: alining devices for alining said totaliZer in its various positions and ron-tructed to be withdrawn from alining an. while the accounting device is being reset o zero: and manipulative means for COlltl'OlililgSrtitl connections.

15. In an accounting machine, the combination with a main operating rrechanism; of a totalizer; differential mechanism for actuating the totalizer and dr'ven by the operating mechanism; a resetting shaft on which said totalizer is mounted; connections intermediate said shaft and the main operating mechanism for rotating the shaft to turn the totalizer to Zero upon an operation of the main operating mohauism and beforethe actuation of the to "lie: s by the differential mechanism; and alining devices for the totalizer adapted to be withdrawn from alining position while the totalizer is being reset to zero. I

16. In an accounting machine, the combination with a main operating mechanism; of a totalizer; differential mechanism for actuating the totalizer driven by the operat-' ing mechanism; a resetting shaft on which said totalizer is mounted; connections intermediate said shaft and the main operating mechanism fo rotating the shaft to turn the total ww; L zero upon an operation of the ma operating mechanism and before the actuation of the totalizer by the differential mechanism; alining pawis normally in engagement with said totalizcr for alining the same; and connections intermediate said resetting shaft and the alining pawls to carry the alining pawls out of engagement with the totalizer upon rotation of the shaft. Y

17. In an accounting machine,,the combination with an accounting device; of means for entering items thereon; connections for resetting the former to zero upon certain operations of the latter and before an item is entered on the totalizer; yieldingly mounted pawls for engagement therewith while the totalizer is being actuated; and means actuated by said resetting connections for positively Withdrawing said pawls from alining position while the totalizer is being reset to Zero.

18. In an accounting machine, the combination with a main operating mechanism; of a totalizer; differential mechanism for actuating the totalizer driven by the operating mechanism; a resetting shaft on which said totalizer mounted: connections intermediate said shaft and the main operating mechanism for rotating the shaft to turn the totalizcr to zero upon an operation of the main operating mechanism and before the actuation of the totalizer by the differential mechanism: and yieldingly mounted aiming pawls for the totalizer adapted to be positivcl y withdrawn from alining position only while the totalizer is being reset to zero.

19. In a machine of the class described, the combination with a totalizer, of operating devices therefor, normally ineffective means for clearing the totalizer, and means for rendering the clearing means effective whereby to clear thetotalizer and enter an item thereon during the same operation of the machine as said ciearing means is ren- 55 dered effective.

alimng the totalizer and in.

20. In a machine of the class described,-

the combination with a totalizer, of operating mechanism therefor and means for controlling same, means for clearing the totalizer, manipulative means for rendering the clearing means effective whereby to clear the totalizer and enter an item thereon at the same operation. of the machine as said clearing means is rendered effective.

21. In a machine of theclass described, the combinationwith a main driving mechanism, of a. totalizer, operating devices therefor, means for clearing the totalizer, manipulative means for controlling said operating devices and clearing means adjustable preliminary to an operation of the marine driving mechanism whereby to clear ,theito: talizer and then enter an item thereon during said operation.

2 In a machine of the class described, the combination with a totalizer, of actuating devices therefor, manipulative means for predetermining amounts to be entered in the totalizer by the actuating devices, normally ineffective means for clearing the totalizer, adjustable means r rendering the clearing means effective, adjustable means and the aforesaid manipulative means being simultaneously operable whereby to cause during a single operation the clearing of the totalizer and the entry therein of the amount set up on the manipulative means at the same time that the adjustablemeans is adjusted.

23. In a machine of the classdescribed, the combination with a totalizer, .of actuating devices 'therefor, a keyboard for con trolling said-actuating devices, normally ineffective means for-clearing the totalizer, a manipulative device for rendering said meansefl'ective, the keys of the keyboard and the manipulative device being simultaneously operable whereby to cause during a single operation the clearing of the totalizer as a preliminary to the entry therein of, the item set up on the keyboard at the time that said' imanipulative device is manipulated.

24. In a machine of the class described, the combination with a driving mechanism, of a totalizer, means for entering items in the totalizer, means for clearing-the totalizer, means operable as a preliminary to an operation of'the main driving mechanism whereby to cause both the item entering and the totalizer clearing means to perform their functions during said operation. and means for disabling the clearing means after it has performed its function.

25. In a machine of the class described. the combination with a main driving mecha nism, of a totalizer. item entering devices therefor, totalizer clearing devices, manipulative means operable as a preliminary to an operation of the main driving mechanism whereby to cause both the item enter- In testimony whereof I aflix my signature mg and the totahzer clear-mg devices to perin the presence of two witnesses. form thelr functions during sni operation,

and means for automatically disabling the I MAX JACOB clearing devices after they have performed Vitnesses: their function and preliminary to operation HENRY HAsPER,

of the item entering mechanism. \VOLDEMAR HAUPr. 

